Question

.An iron rim is made slightly smaller than the wooden wheel around which it has to be
fitted. This iron rim is heated uniformly due to which it undergoes a change 'A' and can be
easily put around the wooden wheel. When cold water is poured over this hot iron rim, it
undergoes another change 'B' and fits tightly over the wooden wheel. After some time, a
change 'C' takes place in the iron rim due to which a red-brown coating is formed on it.

Answer 1

Answer:

A - expands (physical change)

B - contracts (physical change)

C - rusting (chemical change)

Explanation:

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